<pre>
&title=bieu do,{font-size: 26px;}&
&x_axis_steps=1&
&y_ticks=5&
&line=3,#87421F&
&values=<?=$this->values?>&
&x_labels=<?=$this->labels?>&
&y_min=0&
&y_max=<? if($this->y_max==""){echo 2;}else{echo $this->y_max;} ?>&
</pre>
